Flexible Chemical Couplings
Flexible, watertight connections engineered for demanding chemical-waste drainage systems.
Built for piping systems that demand more
Fernco Chemical Couplings provide flexible, watertight connections for drainage systems requiring resistance to a wide range of aggressive chemicals.
Each coupling combines a high-performance elastomeric sleeve with a chemically resistant one-piece Fluoropolymer liner, PTFE seals, stainless steel clamping bands and an external shear band. This construction creates a secure connection while accommodating different pipe materials and outside diameters.
Connection advantages
- Transitions dissimilar chemical piping materials and sizes
- Creates a flexible and watertight mechanical connection
- Suitable for chemical-waste drainage applications
- Available in standard and custom sizes
- Suitable for above- and below-ground installations
Engineered for demanding environments
Chemical Couplings support challenging drainage applications with a broad operating-temperature range, a highly chemical-resistant barrier and compliance with recognized performance standards.
Chemical-resistant drainage across critical facilities
Connect chemically resistant DWV pipe, fittings and waste tanks in commercial, institutional and industrial environments.
Laboratory Facilities
Supports chemically resistant drainage in chemistry, research and testing laboratories.
Medical & Pharmaceutical
Creates dependable connections for specialized drainage systems in medical and pharmaceutical facilities.
Food & Beverage
Suitable for chemical-waste connections in beverage plants, processing operations and commercial kitchens.
Printing & Film
Helps connect drainage piping exposed to chemicals used in printing, imaging and film-production processes.
Pulp & Chemical Processing
Designed for demanding chemical-waste systems found throughout pulp, chemical and industrial facilities.
Waste Tanks
Connects chemical-waste drainage piping to compatible chemical-waste tanks and related equipment.
A chemical-resistant barrier inside a flexible connection
The internal liner and sealing system provide the chemical barrier, while the coupling body and stainless steel components support a secure mechanical pipe connection.
- One-piece Fluoropolymer liner provides the primary chemical-resistant barrier.
- PTFE seals are applied at the pipe connection points beneath the liner.
- High-performance elastomeric sleeve provides flexibility and sealing compression.
- Stainless steel clamps and shear band reinforce the completed connection.
See the connection process
Proper pipe preparation, PTFE tape placement, liner positioning and band tightening are essential to the finished connection.
Technical data
Select the coupling according to the pipe material and actual outside-diameter range.
| Part Number | Pipe Description | Minimum O.D. | Maximum O.D. |
|---|---|---|---|
| CC56G | 1-1/2" PL / CI / GL | 1.73" | 2.09" |
| CC65G | 2" PL / CI / GL or 1-1/2" DU | 2.13" | 2.60" |
| CC75G | 2" DU or 2-1/2" PL | 2.64" | 3.11" |
| CC100G | 3" PL / CI / GL | 3.15" | 3.50" |
| CC115G | 3" DU / DI | 3.54" | 4.29" |
| CC125G | 4" PL / CI / GL / DU / DI | 4.33" | 5.20" |
| CC180G | 6" PL / CI / GL / DU / DI | 6.22" | 7.01" |
| CC225G | 8" PL / CI / GL / DU / DI | 8.35" | 9.21" |
| CC275G | 10" CI / GL | 9.25" | 10.59" |
| CC290G | 10" PL / DU / DI | 10.63" | 12.09" |
| CC335G | 12" PL / CI / GL | 12.25" | 12.75" |
| CC345G | 12" DU / DI | 12.75" | 13.50" |
Chemical Coupling FAQs
Find answers to common questions about materials, sizing, applications and performance.
What types of pipe can Chemical Couplings connect?
Available models accommodate plastic, cast iron, glass, Duriron and ductile iron pipe. Always select the coupling according to the actual outside diameter of each pipe.
Can Chemical Couplings connect different pipe materials?
Yes. Chemical Couplings are designed to transition between compatible chemical piping materials and outside diameters within the published range of the selected coupling.
Where are Chemical Couplings commonly used?
Common applications include laboratories, pharmaceutical and medical facilities, beverage plants, commercial kitchens, printing operations, and pulp, film and chemical facilities.
Can Chemical Couplings be installed below ground?
Fernco Chemical Couplings are suitable for both above- and below-ground chemical-resistant drainage applications. Installation requirements and local codes should always be reviewed for the specific project.
What is the maximum test pressure?
The maximum published test pressure is 4.3 PSI. Chemical Couplings are intended for chemical-resistant drainage and DWV applications, not pressurized process piping.
What temperature range can the coupling handle?
The published minimum temperature is -50°F. The maximum temperature is 212°F under consistent exposure and 266°F under intermittent exposure.
Are custom sizes available?
Yes. Custom sizes can be requested for applications that fall outside the standard product range. Pipe material and actual outside-diameter information will be needed when submitting a request.
Need help with a chemical-waste connection?
Tell us about the pipe materials, outside diameters and application. A Fernco representative can help identify the right Chemical Coupling for the project.
Contact Us About Chemical Couplings